The Old Republic Era

c. 25,053 BBY
 The development of the hyperdrive expands the known galaxy. To keep order, several star systems form a democratic alliance.[8]
c. 25,000 BBY
 The Rakatan Hyperdrive is adapted, manufactured, and widely distributed by the Corellians.[7][13]
 The Unification Wars are fought.[7][14]
 The Galactic Constitution is signed.[15]
 The Galactic Republic is founded.[16]
 Coruscant becomes the Republic's capital.[17]
 Jedi Knights establish a school on Ossus.
 The Perlemian Trade Route is founded, linking Coruscant with Ossus.
24,980 BBY
 Rana Mas Trehalt, legendary Queen of Duro, dies.
 Dassid becomes King of Duro.
24,953 BBY
 The Jedi Order swears loyalty to the Republic.[8]
c. 24,500 BBY
 The first war between the Jedi occurs, when some of their number are drawn to the dark side of the Force, forming the Legions of Lettow.
c. 24,000 BBY
 Hosk Station is constructed on the surface of Kalarba's largest moon.
 The Tionese War is fought between the Galactic Republic and the Honorable Union of Desevro & Tion.
 Mandalore the First founds the Mandalorian crusaders, and begins the planetary conquest.
c. 23,900 BBY
 The former worlds of the Union, (with the exception of Desevro), join the Galactic Republic as a member sector with Tion as the capital.
c. 22,000 BBY
 The planet Nubia is settled.
c. 20,100 BBY
 The Inner Rim is settled.
20,000 BBY
 The Galactic Republic's Great Manifest Period begins.
 The Etti flee persecution in the Core and eventually settle on Etti IV.
19,997 BBY
 An indigenous sentient species of Neona goes extinct.
c. 18,000 BBY
 Bureau of Ships and Services is created.
17,522 BBY
 Haruun Kal is colonized for the first time.
17,000 BBY
 The Alsakan Conflicts begin.
 The Great Manifest Period ends.
 The Indecta era begins.
16,950 BBY
 The Arkanians settle Xexto subjects on Quermia for a genetic experiment.
15,500 BBY
 The Duinuogwuin Contention.
 The University of Coruscant is founded by Borz'Mat'oh and Supreme Chancellor Fillorean.
15,100 BBY
 The Anomids of Yablari develop hyperdrive.
15,000 BBY
 The Indecta era ends.
 Yablari joins the Galactic Republic.
 Neimoidia is finally considered a separate culture from Duro.
 Ando joins the Republic.
 The planet Dahrtag is settled.
 The Aquala and the Quara fight in a civil war.
 The Hutts take over Evocar and rename it Nal Hutta.
14,975 BBY
 Necropolis is colonized.
14,000 BBY
 Vulta joins the Galactic Republic.
c. 13,975 BBY
 The Duros discover Sneeve.
c. 13,720 BBY
 The Herglic Trade Empire collapses.
13,000 BBY
 Lan Barell is discovered.
c. 12,293 BBY
 The first survey of Tandun III is performed.[18]
c. 12,720 BBY
 The Herglic establish contact with the Human colonists of the nearby Tapani Sector and join the Galactic Republic soon after.
c. 12,500 BBY
 The slave trade becomes an everyday part of life on Ryloth.[19]
12,000 BBY
 Ord Mantell is colonized by Corellian colonists as an advanced military outpost for the Republic.[12]
 The Pius Dea Crusades begin.
 The Galactic Museum is established on Coruscant.
11,975 BBY
 Morseer is settled.
11,720 BBY
 The Twelve Kingdoms Era in the Tapani Sector begins.
11,708 BBY
 First contact between the Mrlssi and Humans occurs.
11,500 BBY
 Female Jedi Knight Halbret brings together a contingent of Jedi Knights to defeat a powerful Dark Jedi who has enslaved the Kathol species.
11,000 BBY
 End of the Pius Dea Crusades.
10,019 BBY
 The Corellians discover New Plympto.
c. 10,000 BBY
 Gravlex Med is briefly occupied by Shusugaunt conquerors.
 The Lost City of the Jedi is constructed on Yavin 4.
 Abregado-rae is discovered by Galactic Republic scouts.
 Kinyen recorded history begins.
 The Great Library of Ropagi II is built by the Ropagu.
9,997 BBY
 Fortress Barlos is built on Pochi.
c. 9,990 BBY
 Lightsabers are invented.[source?]
9,988 BBY
 Adumar is settled.
9,000 BBY
 The Rianitus Period begins.
8,296 BBY
 Start of the Sullustan Calendar.
c. 8,000 BBY
 The Republic establishes an outpost on the planet Malastare's eastern continent. Gran colonists arrive over the following millennia and begin to displace the native Dugs.
 The Rianitus Period ends.
7,720 BBY
 The Twelve Kingdoms Era in the Tapani Sector ends.
7,700 BBY
 The war between the Meris and Teltiors on Merisee begins.
7,600 BBY
 Gorothites develop hyperdrive.
7,500 BBY
 Goroth Prime joins the Galactic Republic.
c.7,328 BBY
 The Tapani Sector joins the Galactic Republic.
 The Mrlsst Academy is established on Mrlsst.
7,299 BBY
 Rabaan is colonized.
c. 7,032 BBY
 The "Elders" engage in warfare with the Gungans, forcing the Gungans to retreat underwater.[17]
7,003 BBY
 The Second Great Schism occurs, and the Hundred-Year Darkness begins.
c. 7,000 BBY
 A prophecy tells of a Chosen One who will bring "balance to the Force".[source?]
 According to legend, the Mandalorian Crusaders were formed on the planet Mandalore by the Taung, Mandalore the First.
6,997 BBY
 Mrlsst joins the Galactic Republic.
6,950 BBY
 Quermia is rediscovered by the Galactic Republic.
c. 6,900 BBY
 End of the Hundred-Year Darkness.[7]
 The Dark Jedi lose the war at the Battle of Corbos, and the survivors are exiled from the Republic.[8]
 The Dark Jedi found the Sith Empire, which remains unknown to rest of the galaxy for almost two thousand years.[7]
 Quermia joins the Galactic Republic.
c. 6,875 BBY
 Dathka Graush dies.
6,300 BBY
 S'krrr is discovered by the Rabaanites.
c. 6,000 BBY
 Manderon Period reaches its height.
 The Miraluka migrate to Alpheridies.
 Rheshalva Interstellar Armaments is founded.
5,975 BBY
 Dorin joins the Galactic Republic.
5,689 BBY
 The Sidereal Period begins.
c. 5,500 BBY
 The first leg of the Rimma Trade Route is established by Tapani Sector merchants.
c. 5,100 BBY
 Marka Ragnos defeats Lord Simus and is crowned Dark Lord of the Sith.[20]
5,032 BBY
 An interstellar race colonizes Kooriva, and becomes known as the Koorivar.
 The end of the "Elder" civilization on Naboo.
 Future Jedi, Odan-Urr, is born on Thosa.
c.5,020 BBY
 Gav and Jori Daragon are born on Koros Major.
5,007 BBY
 The symbol of the Republic Navy is carved in a moon.[21]
5,002 BBY
 Nazzri's hereditary monarchy is replaced with a theocratic oligarchy.
5,000 BBY
 The Great Hyperspace War begins when Gav and Jori Daragon accidentally lead the forces of the Sith Empire to the Republic.[22]
 Battle of Coruscant.
 Battle of Koros Major.
 Battle of Kirrek.
 Battle of Primus Goluud.
 First Battle of Korriban.
 Second Battle of Korriban.
 The Republic wins the war, but Dark Lord of the Sith Naga Sadow escapes to Yavin 4.
c. 5,000 BBY
 The planet Tatooine is discovered by the Republic.[23]
4,996 BBY
 The Great Jedi Library is established by Jedi Master Odan-Urr on Ossus.
4,995 BBY
 The Klatooinian Trade Guild is founded on Klatooine.
4,990 BBY
 The dissolution of the First Sith Empire.
4,904 BBY
 After fleeing into Deep Space the remnants of the Sith Empire begin rebuilding their civilization and plotting revenge.[8]
4,800 BBY
 The Gank Massacres take place, resulting in the extinction of the Porporites.
4,700 BBY
 A Jedi Assembly is established.
4,519 BBY
 Uueg Tching, the fifty-fourth Emperor of Kitel Phard, states three ways on how to defeat an enemy, which ultimately becomes a famous, oft-referenced quote.
4,500 BBY
 The Quarren make war on the Mon Calamari.
c. 4,400 BBY
 The Jedi Knight Freedon Nadd falls to the dark side, learning the secrets of the Sith from the spirit of Naga Sadow.
4,350 BBY
 The Beast Wars of Onderon begin.
4,300 BBY
 Taris becomes known as the "Coruscant of the Outer Rim" and rivals the galactic capital itself.[10]
4,250 BBY
 The Third Great Schism.
 The Vultar Cataclysm.
4,200 BBY
 Anchorhead is founded on Tatooine.
4,150 BBY
 Hapes is settled by raiders from Lorell.
4,056 BBY
 Taris suffers a civil war.[10]
 Non-Humans are banished from the Upper City of Taris.[10]
4,050 BBY
 The Lorell Raiders are defeated by the Jedi, resulting in the hatred of the Jedi within the Hapes Consortium.
c. 4,048 BBY
 Drokko Kira is cast out of the Onderon city of Iziz.
4,024 BBY
 Nallastia is settled by colonists from the Darpa Sector.
4,019 BBY
 Four Jedi Masters (two Warrior Masters and two Sage Masters) establish the ziggurat of the Jedi Temple over the Force nexus on Coruscant.
4,018 BBY
 Ulic Qel-Droma is born on Alderaan.
4,015 BBY
 The Great Droid Revolution begins and is ended.
 The Old Sith Wars begin.
4,014 BBY
 Future Mandalore, Canderous Ordo, is born on Ordo.[24]
c. 4,010 BBY
 The Sith holocron of Adas is uncovered by Queen Amanoa of Onderon.
4,002 BBY
 Onderon joins the Galactic Republic.
4,000 BBY
 Sidrona Diath becomes Supreme Chancellor of the Galactic Republic.
 Princess Galia of Iziz weds the Beast Lord Oron Kira.
 Jedi Knight Andur Sunrider is killed during a robbery attempt.
 The Beast Wars end, but the Great Sith War begins at the Battle of Iziz.
 Queen Amanoa of Onderon dies.
 The Talaani Shipyards are established on Tallaan.
 Jedi Padawan Nomi Sunrider becomes a Jedi Knight.
 Satal and Aleema Keto discover ancient secrets of the Sith on their homeworld of Empress Teta and form the Krath, a dark side cult based on Sith teachings.[25]
3,998 BBY
 The Freedon Nadd Uprising occurs on Onderon.
 Dark Jedi Warb Null is killed by Ulic Qel-Droma.
 King Ommin of Onderon dies.
 The Tomb of Freedon Nadd is relocated to Dxun.
3,997 BBY
 Krath leaders Satal and Aleema Keto overthrow the Tetan government, and institute themselves as the Emperor and Empress of the Tetan star system.
 The Krath Holy Crusade begins with the Battle of Basilisk.

 The Mandalorians, led by Mandalore the Indomitable, engage the Republic and the Basiliskans.
 Jedi Knights Ulic Qel-Droma and Nomi Sunrider fight for the Republic at the First Battle of Empress Teta.
 Jedi Master Arca Jeth dies at the Battle of Deneba while saving his apprentice, Ulic Qel-Droma.
 After the Second Battle of Empress Teta, Ulic Qel-Droma defects to the Krath.
 Former Jedi Exar Kun is crowned the new Dark Lord of the Sith.
 Ulic Qel-Droma becomes the apprentice of Exar Kun.
3,996 BBY
 At the Battle of Kuar on the Plains of Harkul, Ulic Qel-Droma defeats Mandalore the Indomitable in combat, winning his loyalty.
 After months of conquering planets from the Deep Core to the Outer Rim, the Sith launch their attack on Coruscant. During the battle, Ulic Qel-Droma is captured and subsequently put on trial for treason.
 Mandalore the Indomitable is defeated by the Republic at the Battle of Onderon and killed by the beasts of Dxun. He is succeeded by Mandalore the Ultimate.
 Sith Lord Ulic Qel-Droma turns away from the dark side.
 Exar Kun is defeated at the Battle of Yavin IV by Ulic Qel-Droma and the Republic.
 Both the Great Sith War and the Krath Holy Crusade end with the Third Battle of Empress Teta.
 Mandalore the Ultimate begins secretly summoning clans from across the galaxy, building up arms and ships on Dxun, working toward the day when a new crusade can be launched.
3,995 BBY
 The Great Hunt is started by the Jedi to exterminate the terentateks.
 According to some historians and points-of-view, the Mandalorian Wars begin.[22]
3,994 BBY
 Ulic Qel-Droma revisits Yavin IV.
3,993 BBY
 The Great Hunt ends.
3,986 BBY
 Conclave on Exis Station.
 Ulic Qel-Droma dies on Rhen Var.
3,985 BBY
 The Coruscant Financial Exchange Establishment Act facilitates the restoration of the galaxy by allowing galactic corporations to invest in the Republic's infrastructure.[25]
3,976 BBY
 The Mandalorian Neo-Crusaders, led by Mandalore the Ultimate, begin to conquer worlds in the Outer Rim.[10]
 Brianna and Mical are born.[24]
 Visas Marr is born on Katarr.[24]
3,974 BBY
 Mira is born.[24]
3,973 BBY
 Battle of Cathar.[25]
3,970 BBY
 Beginning of the Kanz Disorders.
3,965 BBY
 The Mandalorians begin to infringe on Republic territory.
 The Republic engages the Mandalorians in small proxy skirmishes along the Outer Rim, but the Jedi Council forbids involvement by the Jedi until the problem has been assessed.[25][26]
3,964 BBY
 The Mandalorians stage a massive invasion of Republic Space, formally beginning the Mandalorian Wars.[25]
 Battle of Flashpoint Station.[27]
 First Battle of Suurja.[27]
 Second Battle of Suurja.[27]
 Third Battle of Suurja.[27]
 Fourth Battle of Suurja.[27]
 Padawan Massacre of Taris.[28]
 Battle of Vanquo.[29]
3,963 BBY
 The First Battle of Taris marking the beginning of the Siege of Taris.[25][27][30][31]
 First Battle of Onderon.
 Battle of Serroco.[32]
 The Revanchist and Alek discover the genocidal acts of the Mandalorians that occurred during the Battle of Cathar ten years prior.[32]
 In response, the Revanchist and Alek defy the Jedi Council and lead a large faction of Jedi Crusaders[10], including the Jedi Exile[26], to war as "Revanchists".
 Battle of Omonoth.[33]
 Battle of Myrkr.[34]
 Battle of Jebble.[35][36][37]
 The Bombardment of Coruscant by a Mandalorian terror plot results in the destruction of the Draay Estate as well as the deaths of the Draay family and many Jedi.[38]
 First Battle of Iridonia.[25]
 The Second Battle of Iridonia results in the liberation of the planet. In return, many Iridonians join the war on the side of the Republic.[25]
 The Mandalorians nearly devastate planet Duro, forcing the Duros to evacuate and relocate.[25]
3,962 BBY
 Eres III is nearly destroyed by Mandalorian hands, while at the same time the Xoxin plains are intentionally set on fire and continue to burn, even twelve years later.[26]
3,961 BBY
 The Exchange is driven off Taris for a time, thanks to Revan's intervention.[10]
 Juhani is freed from slavery.[10]
 Revan and Malak discover Star Maps on Kashyyyk and Korriban.[10]
 Revan travels to Malachor V and discovers the Trayus Academy.[25]
 Brejik takes command of the Black Vulkar gang on Taris.[10]
 Cassus Fett becomes the most wanted man in the galaxy.[10]
3,960 BBY
 Mandalore the Ultimate is killed by Revan at the Battle of Malachor V.[10]
 The Mandalorian Wars end.[10]
 The Jedi Exile, who was serving as a general, loses all connection to the Force, returns to the Jedi Council, and is exiled from the Order for her crimes.[26]
 Revan and Malak disappear into unknown space with a third of the Republic fleet.[10]
3,959 BBY
 The Jedi Civil War begins.[10]
 Revan and Malak declare themselves Sith and invade the Republic.
 Battle of Foerost.
 Bombing of Telos IV.[10]
3,958 BBY
 Griff Vao leaves Taris with Lena, abandoning his young sister, Mission.[10]
3,957 BBY
 Revan is captured onboard his flagship, after Malak turns against him. Bastila Shan brings Revan back to the Jedi, who use the Force to strip his memories and create a new identity for him.[10]
3,956 BBY
 Battle of Taris which results with most of the planet destroyed.[10]
 Revan and Bastila along with their companions begin to look for the Star Maps spread across four planets (Korriban, Kashyyyk, Tatooine, and Manaan) after finding one on Dantooine.
 Attack on Dantooine.[10]
 At the Battle of Rakata Prime, Revan kills Malak in a lightsaber duel, and the Republic Fleet destroys the Star Forge.[10]
 End of the Jedi Civil War.[10]
 The Sith Civil War begins.[7]
3,955 BBY
 Revan disappears into the Unknown Regions.[26]
 Sith Lords, formerly loyal to Darth Revan and Malak, begin breaking the Sith Empire into smaller domains, declaring themselves sovereign warlords.[25]
 First Jedi Purge begins.[26]
 Supreme Chancellor Cressa starts the Telosian Restoration Project, for which Aratech launches the G0-T0 droid series.[39]
3,954 BBY
 Sith assassins, under orders from Darth Sion, begin a widespread assassination campaign against the Jedi, who soon are all but wiped out.[25]
 The remnants of the Sith Empire are mostly unified by Darth Sion and Darth Nihilus.[25]
3,952 BBY
 The Conclave on Katarr is called to discuss the future of the Jedi Order.[26]
 The Sith Lord Darth Nihilus uses his massive Force powers to feed on the life on Katarr, destroying all life on the planet, (except for the Miraluka Visas Marr), and virtually wipes out the Jedi Order.[26]
3,951 BBY
 Canderous Ordo, known as Mandalore the Preserver, reunites the Mandalorian clans and aids in the fight against the remnants of the Sith Empire.[26]
 The Czerka Corporation, through not entirely legal means, attempts to take control over the Telosian Restoration Project.[26]
 The Exile is discovered aboard the Ebon Hawk by Kreia.[26]
 First Battle of Dantooine.[26]
 First Battle of Onderon.[26]
 Second Battle of Onderon.[26]
 Battle of Telos IV.[26]
 The Exile reestablishes connection to the Force, then kills Darth Nihilus, Darth Sion and Darth Traya, who have spent the last five years assassinating Jedi.[26]
 Destruction of Malachor V.[26]
 First Jedi Purge ends.
 End of the Old Sith Wars.
 The Exile departs to the Unknown Regions to find Revan.[26][40]
3,946 BBY
 Sixteen worlds ruled by G0-T0 droids secede from the Galactic Republic to form the independent territory of 400100500260026.
 The Republic, under the directive of Supreme Chancellor Cressa, retakes 400100500260026.[39]
c. 3,900 BBY
 The planet Naboo is colonized by settlers from Grizmallt.[source?]
3,681 BBY
 The Great War begins.[8]
3,670 BBY
 End of the Kanz Disorders.
 The Jedi free the Lorrdians from Argazdan control.
3,661 BBY
 A Mandalorian army materializes in alliance with the Sith and blockades the Republic's most critical trade route.[8]
3,660 BBY
 Succeeding where the Jedi have failed, a smuggler convoy breaks the Mandalorian blockade and restores the Republic's trade route.[8]
c. 3,653 BBY
 The Great War ends with the Sacking of Coruscant.
 Treaty of Coruscant signed.
 Cold War begins
3,519 BBY
 An expansion to the Jedi Temple on Coruscant is made.
3,500 BBY
 The Iktotchi race is discovered by the Galactic Republic.
3,475 BBY
 Iktotch joins the Galactic Republic.
3,100 BBY
 The Hapan Consortium seals its borders with the rest of the galaxy.
c. 3,032 BBY
 The War of the Gungan Tribes.[41]
 The Gungans are unified under Boss Gallo.[41]
 Boss Rogoe dies.[41]
 Building of Otoh Gunga.[41]
3,000 BBY
 Freia Kallea charts the Hydian Way.
 Hapes Consortium is founded.
 Socorro is colonized by Corellian colonists.
 The Alsakan Conflicts end.
2,996 BBY
 Saalo Morn fails to become a Jedi Knight and crosses over to the dark side of the Force.
2,992 BBY
 The planet Dathomir leaves the Paecian Empire.
2,989 BBY
 The Sayings, (an Atrisian reference), is stored in the Atrisian Imperial Historical Library.
c. 2,979 BBY
 Jabiim joins the Galactic Republic.
2,973 BBY
 The Senate Rotunda is built.
2,700 BBY
 The city of Kala'din on Ryloth collapses.
2,519 BBY
 An expansion to the Jedi Temple on Coruscant is made, including the addition of the Jedi Archives.
c. 2,200 BBY
 The beginning of the height of Saffa painting.
2,032 BBY
 Coruscant experiences its last major groundquake.
 The Koorivar are expelled from Kooriva by an indigenous species.
2,022 BBY
 Durge is born.
c. 2,000 BBY
 Jedi Master Phanius absconds from the order with a stolen Holocron.
 The departure from the Jedi Order of Phanius and his followers becomes the Fourth Great Schism.
 Phanius takes the name Darth Ruin and starts a New Sith Empire.
 Darth Ruin is soon betrayed and killed by his followers.
 The New Sith War begins.
Sometime between 2,000 BBY & 1,532 BBY
 Battle of Uba IV.
1,998 BBY
 Ecclessis Figg is born.
1,991 BBY
 Jomark is colonized.
1,989 BBY
 The planet of Bespin is first colonized.
c. 1,750 BBY
 The Dark Underlord becomes Dark Lord of the Sith.
c. 1,550 BBY
 The end of the height of Saffa painting.
1,532 BBY
 The Koorivar win back control of Kooriva.
 Battle of Gap Nine.
c. 1,500 BBY
 Jaing and Durge are used as pawns in an unnamed Outer Rim cyberneticist's plot to start a war between the Mandalorians and the Sith.
 First Battle of Malrev IV.
1,489 BBY
 The Sayings are printed for the Atrisian nobility.
1,466 BBY
 Battle of Mizra.
Between 1,466 BBY & 1,250 BBY
 Battle of Almas.
1,250 BBY
 Belia Darzu becomes Dark Lord of the Sith.
 The Sictis Wars begin.
1,230 BBY
 Belia Darzu dies.
 The Sictis Wars end.
c. 1,196 BBY
 The civilization on Hathrox III is destroyed in a biochemical civil war.
1,100 BBY
 Tatooine is rediscovered by the Galactic Republic.
 Start of the Republic Dark Age.
1,026 BBY
 Darth Bane is born.
1,020 BBY
 The planet Melida/Daan is colonized.
1,010 BBY
 A Sith Lord creates the Behemoth from the World Below on Aduba-3.
 Dannik Jerriko is born on Anzat.
 Rain, (who would later become Darth Zannah), is born on Somov Rit.
1,006 BBY
 Battle of Korriban.
1,003 BBY
 Battle of Kashyyyk.
 Battle of Hsskhor.
1,002 BBY
 Battle of Phaseera.
1,001 BBY
 Spira is colonized.
c.1,000 BBY
 Battle of Hoth.
 Battle of Dromund Kaas.
 Battle of Malrev IV.
 Battle of Harpori.
 Battle of Balowa.
 First Battle of Ruusan.
 Second Battle of Ruusan.
 Third Battle of Ruusan.
 Fourth Battle of Ruusan.
 Fifth Battle of Ruusan.
 Sixth Battle of Ruusan.
 Seventh Battle of Ruusan

Source: starwars.wikia.com